indexo.dev

rec-tennis.com

.com crawl

First seen 2026-05-15 · Last seen 2026-05-15 · ok HTTP/1.1 200 2530 ms crawled 2026-05-20

JP · 157.112.176.13 · AS131965 Xserver Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
レックテニススクール - 東京・神奈川・埼玉のテニススクール
Description
東京・神奈川・埼玉で15のテニススクールを運営するレックテニススクールの入会プロモーションサイト。テニスでココロもカラダも健康になろう！
Language
ja

Technology

Server
nginx
Stack
PHP
Analytics
  • Google Tag Manager
Social widgets
  • YouTube Embed

Third-party hosts loaded (5)

  • www.googletagmanager.com×2
  • www.youtube.com×2
  • cdnjs.cloudflare.com×1
  • kit.fontawesome.com×1
  • webfonts.xserver.jp×1

Registration

Registrar
XServer, Inc.
Created
2004-07-30
Expires
2026-07-30 70 days left
Updated
2025-06-19
Name servers
  • ns1.xserver.jp
  • ns2.xserver.jp
  • ns3.xserver.jp
  • ns4.xserver.jp
  • ns5.xserver.jp

DNS records live

NS
  • ns1.xserver.jp
  • ns2.xserver.jp
  • ns3.xserver.jp
  • ns4.xserver.jp
  • ns5.xserver.jp
MX
  • 0 rec-tennis.com
Verified for
  • Google

Email authentication weak

SPF
v=spf1 +a:sv812.xserver.jp +a:rec-tennis.com +mx include:spf.sender.xserver.jp include:_spf.google.com include:spf.lan.jp ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-03-25 to 2026-06-23
Expires in 33 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://rec-tennis.com/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Linked from (1)